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17 00 008 Draining and adding coolant (N54, N54T)

Special tools required: 

WARNING: Risk of scalding!
Only carry out repair work on the cooling system after the engine has cooled down!
IMPORTANT: Lifetime coolant filling:

Never reuse used coolant!

When replacing and removing components which rely on the corrosion protection effect of the coolant, it is essential to change the coolant. The cooling system must therefore be drained and refilled.

In the case of other removal work involving the draining of part quantities of coolant, replace these quantities which have been drained with new coolant.

Installation note: 

Use only recommended coolant. See RADIATOR -- OPERATING FLUIDS .

Observe mixture ratio. See RADIATOR -- OPERATING FLUIDS .

Protective measures/rules of conduct 

IMPORTANT: For dirt contamination of the cooling system (e.g. by engine oil), the cooling system must be rinsed with water until all dirt contamination is removed!
IMPORTANT: Risk of skidding due to coolant on the floor.
Danger of injury! 

Catch and dispose of drained coolant in drip tray (1) and if necessary special tool 00 2 030 (universal hydraulic lifting equipment).

Recycling 

Observe country-specific waste disposal regulations.

Fig 1: Disposing Drained Coolant In Drip Tray Using Special Tool
G09847348Courtesy of BMW OF NORTH AMERICA, INC.

Necessary preliminary work: 

Draining coolant 

Open sealing cap (1) on coolant expansion tank (2).

Installation note: 

Close sealing cap (1) until the arrow marks line up.

Fig 2: Identifying Close Sealing Cap
G09847349Courtesy of BMW OF NORTH AMERICA, INC.

Open coolant drain plug (1).

Drain, catch and dispose of coolant.

Installation note: 

Unfasten and detach coolant hose (1) from thermostat housing.

Drain, catch and dispose of coolant.

Fig 4: Detaching Coolant Hose
G09847351Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: Adding coolant:

Use only recommended coolant. See RADIATOR -- OPERATING FLUIDS .

Observe mixture ratio. See RADIATOR -- OPERATING FLUIDS .

Observe capacities  . See COOLANT, COOLING SYSTEM TEST, BMW, E90, E91, E92, E93, N54 .

Observe bleeding instructions without fail. 

Fill and bleed cooling system  See 17 00 039 VENTING COOLING SYSTEM AND CHECKING FOR WATERTIGHTNESS (N54) , 17 00 039 VENTING COOLING SYSTEM AND CHECKING FOR WATERTIGHTNESS (N55)  or 17 00 039 VENTING AND FILLING COOLING SYSTEM WITH VACUUM FILLING UNIT .

Visual inspection of cooling system for tightness.

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